Characteristics of the product
Insulated Glass is a type of glass that has spaces between glass which could be one or multiple spaces. These spaces result from using spacers to separate glass, it is therefore possible to look through like normal glass. The main purpose of insulated glass is to reduce heat transfer between indoors and outdoors. The most prevalent spacer used as the middle division is aluminium. An aluminium spacer will be formed with the hole in the middle, and the side that turn towards the space between the glass will have porous part to let the air flow between glass’ space and aluminium spacer’s.
The space of aluminium is a place for putting desiccant. When edges of insulated glass are closed, air will not be able flow in and out between the space inside the glass unit and external atmosphere. Desiccant will absorb humidity out of the air in the glass, letting the air to get dry. Dry air is a good insulator; hence, it enhances a thermal insulation property of insulated glass.
Being a high thermal conductivity material, using aluminium as a spacer will have a weakness for heat release. There are other kinds of spacer which are superior at heat insulation, however these alternatives are unpopular. This is because spacers should not only be adequately strong to handle with force reception and deflection of glass that can occur during the production, but price of spacers also should not exceed that of aluminium. Plastic is one of the examples that can be applied as the alternative.
All kinds of flat glass (float glass, tempered glass, heat-strengthened glass, laminated glass, reflective glass, Low-E glass, and self-cleaning glass) can be a part of insulated glass as long as that particular glass has less than 2 millimeters of deflection.
Having a capability in conducting heat less than dry air, inert glass can be a substitution of dry air in order to intensify thermal insulation properties. Argon is the most common inert gas for producing insulated glass.
The selection of various types of glass and gas will affect properties of glass in terms of thermal insulation, sound resistance, and tolerance towards crash and wind pressure. Superior property may come with higher price. In order to select the best value for money product and ensure the possibility of production and installment, a consultation between an owner, an architect, an engineer, a contractor, and a producer should be held.